Device for tightly closing and opening hinged doors on board ships from a distant point of operation.



G. MAZZOLINI. DEVICE POR TIGHTLY CLOSING AND OPENING HINGED DOORS 0N BOARD SHIPS FROM A DISTANT POINT OP- OPERATION.

APPLICATION FILED APR.14. 1910. 1,908,978. Patented Nov.14,1911

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G. MAZZOLINI. DEVICE POR TIGHTLY CLOSING AND OPENING HINGBD DOORS 0N BOARD SHIPS PROM A DISTANT POINT OP OPERATION.

APPLICATION FILED APB.. 14. 1910.

1,008,978. Patented NOV. 14, 1911.

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UNITED STATES PATENT OFFICE.

GIUSEPPE MAZZOLINI, OF NAPLES, ITALY.

DEVICE FOR TIGHTLY CLOSING AND OPENING HING-ED DOORS ON BOARD SHIPS FROM l A DISTANT POINT OF OPERATION.

Specification of Letters Patent.

Patented Nov. 14, 1911.

Application filed April 14, 1910. Serial N o. 555,500.

tion.

I am aware that there are devices for opening and closing doors, such as bulkheads on board ships, in which the door is connected with its operating piston rod by a frame provided with wedge pieces, so that the frame after the door having been carried to its closing position, that is to say in registry with and opposite the door aperture, will be capable of a further movement which may be utilized for pressing the door forcibly and tightly against its frame.

My present invention relates to a device of the above described class which is essentially characterized by the fact that the wedge carrying frame comprises two parts connected together by slot joints the upper one of which parts, placed above the door, may take part in the rotary movement of the door while the other part, placed at the side of the door, is fixed to the piston rod and provided with projections which during the closing stroke of the piston-rod effect the closure of the door whereupon, on the frame sections and piston-rod being in straight position, the further movement of` the frame is effected which causes the door to be pressed forcibly and tightly to its frame.

In order that my said invention may be more fully understood, I am now going to describe it particularly with reference to the example or form illustrated in the anneXed drawings in which- Figure 1 is a front view of the left half of the closed door; Fig. 2 is a section on line A-B of Fig. 1; Fig. 3 a section on line C -D of Fig. l; Fig. 4 a similar section with parts inthe position from .which the final movement of the door for pressing it in tight closing position is effected; Fig. 5 is a vertical section taken through the open door;`

Fig. 6 is a section on line E-F; Fig. 7. a section on line G-H of Fig. 1; Fig. 8 a detail; Fig. 9 an elevation of the upper right hand corner of the closed but not yet tightly pressed door, and Fig. 10 a section on line J-K of Fig. 9.

In the above figures where like letters of reference `indicate like parts of the device, 1- is the door movably fixed to the frame -2- by hinges -8-. Above and at the side of door --l a compound frame is provided comprising two sections -4 and *p5- connected together by slotted links -6-, see Fig. 8. The frame'section -4- placed above the door is capable of partaking of the rotary movements of the hinged door, while the other frame section -5-, placed laterally of the door, is fiXedly connected by a guide head -7- to a piston-rod 1'-, which optionally may also be substituted by a rack,-by the alternate movements of which the necessary movements are imparted to the frame sec tions -4 and -5- and t-he door 1. Frame section -5 besides being connected to piston-rod -7 is provided with a plurality of slide blocks 8- shaped correspondingly to the guide head k7-, and is uniformly guided with the said slide blocks -8- and piston-rod -7- by a transverse rail 10- fixed to the bott-om flange of the door frame 2` and supported by ribs -9. The frame section -5- has furthermore a plurality of projections -11-, `12--,.engaging the lower front side of the frame section -4- and a plurality of projections 13 wedge shaped at their free ends and capable of being pressed on the lower part of the door. The projection 11-, as will be described hereafter, is designed to start the closing movement of the door, while the projections -12- are adapted to complete the said closing movement.

The frame section 4- is provided on its back side with a number of wedge faces -14- slidably placed on corresponding counter-wedges -15- provided on the front side of door 1* so that by the upward movement of the frame sections -4, 5 the frame section -4*, corresponding to the wedge movement, is uniformly removed throughout from door -1-, Fig. 3, while on the down movement of the frame it is moved toward the door, Figs. 4 and 5, the

vwedge pieces *141- partially engaging recesses -16 provided in the front side of the door, Figs. 3, 4, 5.

On the lower part of the door connected to the door frame -2- a number of wedge shaped ascending faces--l7- and -18- is provided, corresponding to the number of the slide blocks -8-, piston-rod -7- and projections -l3-. On 'the said faces -17-, when the door is closed, bears the slanted end -19- of the head -7- of the piston-rod -7- and slide blocks -8-, while against the faces -18- the projections -13- are pressed, thus pressing the door tightly in its groove. Furthermore on the front side of the door a plurality of projections 20- are provided which have V- shaped recesses each of which is engaged, Fig. 10, by a wedge -21- projecting from the frame section -4 so that the latter is connected to the hinged door -1- thus being obliged to partake of the rotary movement of the latter.

The frame section -4- is provided on three sides with projections -22- on its front face which are adapted to engage beneath corresponding counter-wedge faces -23- projecting from the door frame -2- in order to press the door -1- throughout tightly in its groove, as is shown on Fig. 3. The operation of the above described device is as follows: lVhen it is desired to open the closed and tightly pressed door -1-, the piston rod -7- in the position of the door shown is moved down so as to first carry with it only the frame section -5- with the projections provided on the same until the connect-ing pins fixed on the frame section -5- and capable of sliding in the slotted links -6- will have reached the bottom limit of the slot, whereupon also the frame section -4- is carried down to a point where its wedge pieces -14- slide down the wedge pieces -l-,jand the frame section -4- partially engaging the recesses -16- is moved toward the door -1- and then becomes connected to it by the wedge shaped pivots -21-, Fig. 10, wholly entering into-the slot of the projections -20- of the door. By lthe said downward movement, as is seen from Figs. 4, 9 and 10, also wedges -22- have become clear of the wedge faces -23-, so that the door -1- with the frame section -4- held on to it is transferred, on the further descent of piston rod -7-, without any shock to the open position shown in Fig. 5 where it is supported by ribs -9- iixed on the bar -l0-, or in any other suitable manner. When it is desired to shut the door, it is suiiicient to move upward the piston rod -7- with the frame section -5- rigidly connected thereto, whereby in the first place the projection -11- meets the frame section -4- thus imparting first a raising movement to the door -1- connected thereto, whereuponxalso vthe projec-v tions -13- sliding under the frame section -4- strike the door so as to move it, by sliding ,on the wedge faces -18-, to the closure position shown in Fig. 4, where also the' frame sections -4-, -5- are again in stretched position so as to touch each other, and in the subsequent closing movement of the piston rod are moved jointly to the position shown in Figs. 1 and 3, whereby the frame section -4- owing to its wedges -14- running up the wedges -15- of the door is again moved away from the latter, the wedges -22- engaging beneath the counter wedges -23- provided on the door frame -2-, besides which the sloping faces -19- of the slide blocks and piston-rod head are pushed on the wedge faces -l7-, the projections -13- running completely on the wedge faces -18- and the projections -12- moving above the lower edge of the frame section -4-, so that the door -lis now kept completely closed and pressed throughout tightly in its groove.

I-Iaving now fully described my said in- I vention and the manner in which the same is to be performed, I claim and desire to secure by Letters Patent:

Device for opening and shutting hinged doors, such as for bulkheads on board ships, comprising in combination: a door, a piston rod operating the said door, a two sectioned frame carrying wedge pieces and connecting the door to the piston rod, the said frame sect-ions -4- and -5- being connected together by slotted links (-6-), the frame section (-4-) placed above the door (-l-) being capable of' partaking of the rotary movement of the said door, while the other frame section (-5-) placed laterally of the door is solidly connected to the piston ro'd (-7-), projections (-1l-, -13-) on the said frame section capable of shutting the door on the closing movement of the said piston rod, lso that when the frame sections (-4-, -5-) and the piston rod (-7-) are in stretched position the frame is pushed farther on thus pressing the door tightly in its groove.

In testimony whereof I have signed my nalne to this specification in the presence of two subscribing witnesses'.

' GIUSEPPE MAZZOLINI.

Witnesses: l

VINCENZO PALLADINO, NICOLO GUERINI.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

